[INFO] cloning repository https://github.com/FrontMage/rock
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FrontMage/rock" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrontMage%2Frock", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrontMage%2Frock'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c3e73b36f684fbd67143dba4712c1738e8b66174
[INFO] checking FrontMage/rock against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrontMage%2Frock" "/workspace/builds/worker-45/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-45/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FrontMage/rock on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FrontMage/rock
[INFO] finished tweaking git repo https://github.com/FrontMage/rock
[INFO] tweaked toml for git repo https://github.com/FrontMage/rock written to /workspace/builds/worker-45/source/Cargo.toml
[INFO] crate git repo https://github.com/FrontMage/rock already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.5.4
[INFO] [stderr]   Downloaded textnonce v0.6.4
[INFO] [stderr]   Downloaded chrono v0.4.4
[INFO] [stderr]   Downloaded isatty v0.1.8
[INFO] [stderr]   Downloaded matches v0.1.7
[INFO] [stderr]   Downloaded smallvec v0.6.3
[INFO] [stderr]   Downloaded mongodb v0.3.10
[INFO] [stderr]   Downloaded rocket_contrib v0.3.15
[INFO] [stderr]   Downloaded pear_codegen v0.0.19
[INFO] [stderr]   Downloaded pear v0.0.19
[INFO] [stderr]   Downloaded bson v0.12.2
[INFO] [stderr]   Downloaded rocket_codegen v0.3.15
[INFO] [stderr]   Downloaded rocket v0.3.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 213d620126f5a24d474fbe36a9fdc75ecd41e72352ff2ee0aca3eee316c0fb74
[INFO] running `Command { std: "docker" "start" "-a" "213d620126f5a24d474fbe36a9fdc75ecd41e72352ff2ee0aca3eee316c0fb74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "213d620126f5a24d474fbe36a9fdc75ecd41e72352ff2ee0aca3eee316c0fb74", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "213d620126f5a24d474fbe36a9fdc75ecd41e72352ff2ee0aca3eee316c0fb74", kill_on_drop: false }`
[INFO] [stdout] 213d620126f5a24d474fbe36a9fdc75ecd41e72352ff2ee0aca3eee316c0fb74
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-45/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6868de15e4c226be4173d5615ce4c87a9ef39fb122e455b22e262a89a2a02909
[INFO] running `Command { std: "docker" "start" "-a" "6868de15e4c226be4173d5615ce4c87a9ef39fb122e455b22e262a89a2a02909", kill_on_drop: false }`
[INFO] [stderr] error: failed to create jobserver
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   failed to increase jobserver pipe capacity from 4096 to 8192; jobserver otherwise might deadlock
[INFO] running `Command { std: "docker" "inspect" "6868de15e4c226be4173d5615ce4c87a9ef39fb122e455b22e262a89a2a02909", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6868de15e4c226be4173d5615ce4c87a9ef39fb122e455b22e262a89a2a02909", kill_on_drop: false }`
[INFO] [stdout] 6868de15e4c226be4173d5615ce4c87a9ef39fb122e455b22e262a89a2a02909